CVE-2021-41174— grafana 跨站脚本漏洞
一分钟漏洞结论
影响对象
grafana grafana
利用判断
存在公开或 AI PoC，应优先验证
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Grafana是Grafana实验室的一套提供可视化监控界面的开源监控工具。该工具主要用于监控和分析Graphite、InfluxDB和Prometheus等。 Grafana 存在跨站脚本漏洞，该漏洞源于没有对 URL 进行验证，导致 AngularJS 渲染引擎执行 URL 中包含的 JavaScript 表达式。
公开利用映射 1
Nuclei · 1
CVE-2021-41174.yaml [template]
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一、 漏洞 CVE-2021-41174 基础信息
漏洞信息
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Vulnerability Title
XSS vulnerability allowing arbitrary JavaScript execution
来源: CVE Program / CVE List V5
Vulnerability Description
Grafana is an open-source platform for monitoring and observability. In affected versions if an attacker is able to convince a victim to visit a URL referencing a vulnerable page, arbitrary JavaScript content may be executed within the context of the victim's browser. The user visiting the malicious link must be unauthenticated and the link must be for a page that contains the login button in the menu bar. The url has to be crafted to exploit AngularJS rendering and contain the interpolation binding for AngularJS expressions. AngularJS uses double curly braces for interpolation binding: {{ }} ex: {{constructor.constructor(‘alert(1)’)()}}. When the user follows the link and the page renders, the login button will contain the original link with a query parameter to force a redirect to the login page. The URL is not validated and the AngularJS rendering engine will execute the JavaScript expression contained in the URL. Users are advised to upgrade as soon as possible. If for some reason you cannot upgrade, you can use a reverse proxy or similar to block access to block the literal string {{ in the path.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
来源: CVE Program / CVE List V5
Vulnerability Title
grafana 跨站脚本漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Grafana是Grafana实验室的一套提供可视化监控界面的开源监控工具。该工具主要用于监控和分析Graphite、InfluxDB和Prometheus等。 Grafana 存在跨站脚本漏洞，该漏洞源于没有对 URL 进行验证，导致 AngularJS 渲染引擎执行 URL 中包含的 JavaScript 表达式。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2021-41174 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|---|---|---|
| 1 | Grafana is an open-source platform for monitoring and observability. In affected versions if an attacker is able to convince a victim to visit a URL referencing a vulnerable page, arbitrary JavaScript content may be executed within the context of the victim's browser. The user visiting the malicious link must be unauthenticated and the link must be for a page that contains the login button in the menu bar. The url has to be crafted to exploit AngularJS rendering and contain the interpolation binding for AngularJS expressions. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-41174.yaml | POC详情 |
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CVE-2021-41174 补丁与修复 (2)
CVE-2021-41174 厂商安全公告 (2)
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https://github.com/grafana/grafana/security/advisories/GHSA-3j9m-hcv9-rpj8 x_refsource_CONFIRM
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https://security.netapp.com/advisory/ntap-20211125-0003/ x_refsource_CONFIRM
IV. Related Vulnerabilities
V. Comments for CVE-2021-41174
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